Articles by me

As a mechanical designer, I prepare fabrication drawings.
I apply a lot of dimensions to holes,
and I have to work out tolerances.
Finally, I sat down and did the math.
If you prepare or check mechanical drawings,
this article should be useful.
Adobe Acrobat format.

I have been working with engineering documentation in some form
or another since the mid-seventies.
This is an opinion piece,
based on all my experience.
This is the PDF version,
since LaTeX2HTML does not seem to manage graphics at the moment.

Positional tolerances as per ASME Y14.5,
and some ISO specification,
are supposed to provide 50% more allowance,
compared to +/- tolerances.
Do they?
Gnuplot and latex2html are not working well together,
so this is available only in PDF.
Also, note how the scatter diagrams are generated randomly,
every time this website is updated.